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RSB [31]
3 years ago
11

What is the value of the expression 8−2 ? 64 116 164 −16

Mathematics
1 answer:
GenaCL600 [577]3 years ago
3 0

Any number to the power of a negative integer will be 1 over that number with the absolute value of the power, so it looks like this:

x^{-2} = \frac{-1}{x^{2}}

Therefore, you just need to 8² which is 64, and then do 1 over that (1/64) because it's a negative power.

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21. Tom buys a DVD player on 12 monthly payments. The cash price is $600. He pays
slamgirl [31]

Answer:

Each monthly payment is $ 49.05, and in total Tom paid $ 648.60.

Step-by-step explanation:

Given that Tom buys a DVD player on 12 monthly payments, whose cash price is $ 600, and he pays a 10% deposit and the store charges 9% interest, to determine how much is each payment and the total amount Tom pays for the DVD player the following calculations must be performed:

600 - 600 x 0.1 = 540

540 x 1.09 = 588.6

588.6 / 12 = 49.05

Thus, each monthly payment is $ 49.05, and in total Tom paid $ 648.60.

8 0
3 years ago
Pls help me I don't understand​
frutty [35]

Answer:

d. \:  \:  \: 25 {x}^{6}

Step-by-step explanation:

Given,

Side of the square

= 5 {x}^{3}

Therefore, area of the square = side × side

=  {5x}^{3}  \times 5 {x}^{3}

= 5 \times 5 \times  {x}^{3 + 3}

= 25 {x}^{6}

8 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=4859%20%5Cdiv%2023" id="TexFormula1" title="4859 \div 23" alt="4859 \div 23" align="absmiddle"
DerKrebs [107]
The answer is 211.26087
3 0
3 years ago
Read 2 more answers
Factor this x^3 + 27
masya89 [10]
(x+3)(x^2-3x+9)

this gets the x^3 while the 3x cancels out and 3*9=27

hope this helps although i didn't explain very well :)
8 0
3 years ago
Beverage A and Beverage B are sold in identical cans. Beverage A is 6% sugar. The portion of Beverage B that is sugar is 0.21. H
muminat

Answer:

3.5 more times sugar in B

Step-by-step explanation:

We need to see that the fact that Beverage B is 0.21 sugar can be translated to percentages, just by multiplying and dividing by 100 to get it easier to see:

0.21 * 100 /100 =  21/100 = 21% percent

This means that for every 100 units, 21 are sugar.

Now we can compare percentages directly, as both have the same volume because are sold in identical cans. We need to get how many times is 21 greater than 6. The only thing we need to do is the ratio between them:

21/6= 3.5

This implies that 21 is 3.5 greater than 6, you can verify it by multiplying 6 by 3.5 and getting 21.

So, B has 3.5 times more sugar than A.

5 0
3 years ago
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